125242145 has 16 divisors (see below), whose sum is σ = 181865088. Its totient is φ = 80828160.

The previous prime is 125242141. The next prime is 125242147. The reversal of 125242145 is 541242521.

It is not a de Polignac number, because 125242145 - 2² = 125242141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125242141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104651 + ... + 105840.

It is an arithmetic number, because the mean of its divisors is an integer number (11366568).

Almost surely, 2^125242145 is an apocalyptic number.

It is an amenable number.

125242145 is a deficient number, since it is larger than the sum of its proper divisors (56622943).

125242145 is a wasteful number, since it uses less digits than its factorization.

125242145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210520.

The product of its digits is 3200, while the sum is 26.

The square root of 125242145 is about 11191.1637017783. The cubic root of 125242145 is about 500.3226517469.

Adding to 125242145 its reverse (541242521), we get a palindrome (666484666).

The spelling of 125242145 in words is "one hundred twenty-five million, two hundred forty-two thousand, one hundred forty-five".